Need some advice MIL Situation, AITA?

I'm gonna lay out the key points cause I don't want to get overwhelmed again typing this

- MIL is alcoholic, has been for about 3 years, her fiancé enables it

- When she was sober she was awesome, now she is not, she is rude, pushes boundaries, is inconsiderate, and makes people uncomfortable. Her behavior while drunk, over the course of the past two years has become her behavior while sober. Its hard to tell when she's drunk or not.

- We visited her a few months ago and she had her friends kid over at their house, after seeing how she interacted with her, I decided I don't want her around our kid unsupervised, husband agrees (One example: her fiancé was making fun of the little girl (7 years old) until she cried, MIL then encouraged her to take her angry out in a toxic way by telling her to hit him.)

- Continue forward we go on a camping trip, a lot of stuff happens but I don't want to go into detail cause it'll give me anxiety, but she's drunk the entire trip

- We get into a fight, husband and I leave.

- She texts me, trying to apologize, I lay out boundaries that include seeking help for her drinking, she goes off and I put the phone down, this cycle continues for a week or so, eventually it goes from apologizing to calling me names and shit, and telling me she isn't remorseful, and she's just trying to keep me satiated so I don't steal her son (keep in mind, I have told my husband that I don't want him to cut his mom off, and that he should continue working on the relationship until its deemed completely unsalvageable)

- We have another argument, I block her cause i'm done and just want to let things simmer for awhile

- Husband also tells her the if she continues on with him, he'll need to add space as well

NOW Heres where it gets tricky and I start feeling like the asshole

- She stopped talking about it to Husband, but before she did she told him she was going to work on her drinking

- She's continuing to make plans for my baby shower which I don't want her doing because I feel like its going to be held over my head, even though I didn't ask her to do it, people are going to see what she did, and see that I am still resisting her, and see me as ungrateful

- Shes doing the same thing with my registry. She asked my husband for the link and he sent it to her, now I keep getting notifications like "MIL Name just bought 8 things from your registry!" EVERY DAY and I feel like she's doing it to manipulate us and everyone else.

- Thing is, its kinda working on me, It makes me feel like a spoiled brat, even though my husband and others I've confided in reassure me that i'm doing the right thing by putting distance down

- On the other end though, it makes me feel once again like my boundaries are being pushed, because she's planning my baby shower without even talking to me, and buying gifts, after we've gone no contact, knowing that i'm being contacted every time she does

IDK